Dare to Know

Nonage [immaturity] is the inability to use one’s own understanding without another’s guidance. This nonage is self-imposed if its cause lies not in lack of understanding but in indecision and lack of courage to use one’s own mind without another’s guidance. Dare to know! (Sapere aude) 'Have the courage to use your own understanding,' is therefore the motto of the Enlightenment.

Immanuel Kant 1784 Wikipedia: What is Enlightenment | English translation